SDN between Nodes to provide an internal network


Well-Known Member
Aug 15, 2018
I have a 3 node cluster in my home lab. Each Node has a single NIC and all can access the WAN and the physical LAN ok.

I'm struggling to set up a VNET or virtual network so that some of the VMs/LXCs can exist on their own separate network but across the nodes.

I've installed and configured SDN on the cluster and can see that zone1 (simple) is showing on each of the nodes which I then set up two LXCs 104 & 106 called "test", each using VNET1 which is in zone1.

104 is set to use and 106 is set to use


Clearly I'm doing something wrong but I cannot see what the issue is.
Simple zone are more for isolated network, or routed network. With différents subnets by node. You can try vlan or vxlan zones if you need a layer2 between nodes.


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!